S-96177A280 5/16"-18 x 2" ASTM A108 Coupling Nuts
Coupling Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Enhanced corrosion resistance with black-oxide steel finish, extending service life in demanding industrial environments
- Superior load distribution through full UNC threading, ensuring reliable connections under high tension
- Precision thread engagement with Class 2B fit, minimizing cross-threading and installation errors
- Robust material strength compliant with ASTM A108 standards, providing consistent performance in structural applications
- Optimized for coarse thread applications with 5/16"-18 UNC spacing, offering quick assembly and vibration resistance
- Environmental compliance assurance meeting RoHS 3 and REACH regulations, suitable for regulated industries
- Versatile connectivity with standard 2" length and 27/64" OD, accommodating various rod and bolt extensions
Professional Applications & Engineering Value
This black-oxide steel coupling nut delivers critical engineering solutions for industrial assembly and mechanical systems requiring extended threaded connections. The fully threaded 5/16"-18 UNC design with coarse spacing provides superior resistance to vibrational loosening, while the Class 2B thread fit ensures precise alignment in high-tolerance applications. Manufactured from ASTM A108 compliant steel, it maintains structural integrity in construction, machinery, and automotive frameworks where coupling nuts must withstand cyclic loading. The black-oxide surface treatment adds a protective layer against oxidation, making it ideal for outdoor equipment and harsh operational environments without compromising thread engagement.
Specification Summary & Compliance
This coupling nut maintains Class 2B thread fit per UNC standards with precise 5/16"-18 coarse threading. Manufacturing adheres to ASTM A108 material specifications for dimensional consistency. Regulatory compliance includes RoHS 3 (2015/863/EU) with exemption 6(a) for lead in steel alloys and full REACH (EC 1907/2006) adherence for hazardous substance restrictions. Physical dimensions feature 2" length and 27/64" OD with right-hand threading configuration.
